iBUYPOWER Gamer Essential GS-500 Desktop PC (AMD Athlon 64X2 5000+ Processor, 4 GB RAM, 320 GB Hard Drive, DVD Burner/Reader, Vista Premium) (Discontinued by Manufacturer) With Microsoft Windows Vista 64-bit you can now be able to run more physical memory and is also backward compatible with 32-bit software Windows Vista Home Premium preinstalled with Microsoft Office 2007 Trial Edition Affordable, powerful gaming desktop PC with clear side panel and neon light accents